I don't know man. I'm one of WoW's stauncher apologists, and even I think this is straight up milking. I don't think your arguments explain why this costs any rl money at all, let alone $15. If you think ActiBlizz should charge for anything they can get away with, then I can't dispute that simple logic.

But if charging as much for extras as you can without actively chasing away your players doesn't count as greed, I'm not sure what does.